Add initial metadata implementation

[MattGrayUL]

Summary

Add a Summary here.

Contributor Tasks

• [ ] Create or edit test cases here
• [ ] Add a CHANGELOG entry for this change.
• [ ] Ensure documentation requirements are met e.g., public API is commented.
• [ ] Consider any licensing/other legal implications for this MR e.g. notices required by any new libraries.

Test Cycle

Link to the test cycle here.

Reviewer Tasks

• [ ] Code reviewed.
• [ ] Non-code assets e.g. Unity assets/scenes reviewed.
• [ ] All tests must be ran and cover all scenarios (If not, add new tests to the cycle and run them).
• [ ] Documentation has been reviewed.
• [ ] Approve with a comment of any additional tests run or any observations.

Related JIRA Issues

If this MR closes any JIRA issues list them below in the form Closes PROJECT-#

Pull Request Templates

Switch template by going to preview and clicking the link - note it will not work if you've made any changes to the description.

• default.md - for contributions to stable packages.
• release.md - for release merge requests.

You are currently using: default.md

Note: these links work by overwriting query parameters of the current url. If the current url contains any you may want to amend the url with &template=name.md instead of using the link. See query parameter docs for more information.